نتایج جستجو برای: small and large deformations
تعداد نتایج: 17010987 فیلتر نتایج به سال:
To determine the nitrate pollution (water, soil, and tubers) in small (< 0.5 ha), medium (0.5- 1 ha) and large (> 1 ha) size of potato fields, this study was conducted in Fereidan region of Isfahan province during growing season of 2014-2015. For this purpose, the amounts of inputs and the tuber yield were recorded in each farm. Also, average nitrate-N concentration in irrigation water, soil an...
the rationale behind the present study is that particular learning strategies produce more effective results when applied together. the present study tried to investigate the efficiency of the semantic-context strategy alone with a technique called, keyword method. to clarify the point, the current study seeked to find answer to the following question: are the keyword and semantic-context metho...
We introduce a solid harmonic wavelet scattering representation, invariant to rigid motion and stable to deformations, for regression and classification of 2D and 3D signals. Solid harmonic wavelets are computed by multiplying solid harmonic functions with Gaussian windows dilated at different scales. Invariant scattering coefficients are obtained by cascading such wavelet transforms with the c...
Since the physical behavior of many tissues is shown to be viscoelastic, we propose a novel registration technique for medical images via physical principles of viscoelasticity. It allows the template and the target images to differ by large local deformations like viscous fluid and small local deformations like elastic solid. With an extra elastic term introduced, the proposed model constrains...
Graphene is one of the nanostructured materials that has recently attracted the attention of many researchers. This is due to the increasing expansion of nanotechnology and the application of this nanostructure in technology and industry owing to its mechanical, electrical and thermal properties. Thermal buckling behavior of single-layered graphene sheets is studied in this paper. Given the fai...
در این تحقیق زیست چینه نگاری وریزرخساره های مقطع آریش مورد مطالعه و بررسی قرار گرفته است. مقطع آریش درحاشیه شرقی بلوک لوت ودر غرب خوسف واقع شده است. ضخامت مقطع حدود 450 مترمی باشد. از نظر لیتولوژی عمدتا شامل تناوبی از آهک های ماسه ای، آهک های رسی، کالکارنایت وتوف است. طبقات رسوبی در این مقطع به صورت ناپیوسته بر روی کالرد ملانژیا فلیش کرتاسه بالایی قرار گرفته ومرز بالایی آن توسط آبرفت پوشیده می ...
this study investigated the effects of planning on second-language written production with regard to task type. the participants were 75 iranian learners of english as a foreign language attending a private foreign language institution. they were asked to complete two different types of writing tasks (expository writing task and argumentative writing task) in different planned conditions (indiv...
We consider QCD-like theories with one massless fermion in various representations of the gauge group SU(N). The theories are formulated on R3 ×S1. In the decompactification limit of large r(S1) all these theories are characterized by confinement, mass gap and spontaneous breaking of a (discrete) chiral symmetry (χSB). At small r(S1), in order to stabilize the vacua of these theories at a cente...
Abstract-An Eulerian finite element formulation is presented for problems of large elastic-plastic flow. The method is based on Hill’s variational principle for incremental deformations, and is ideally suited to isotropically hardening Prandtl-Reuss materials. Further, the formulation is given in a manner which allows any conventions finite element program, for “small strain” elastic-plastic an...
This work presents the nonlinear analysis of dynamics large strain deformation subsea flowlines and jumpers conveying two-phase fluid. Precisely, flexible pipes operating in stated condition undergo deformations. Thus, known deterministic model system is solved using method discretized perturbation. this study obtained natural frequency simply supported modelled theory. Results show that both h...
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